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Finding the Fourth Proportional to 3,339.92, 5,009.58 and 874.76

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Solution

The fourth proportional to 3,339.92, 5,009.58 and 874.76 is: 1,312.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,339.92 : 5,009.58 = 874.76 : x
  2. Step 2: Convert to fraction form
    3,339.92/5,009.58 = 874.76/x
  3. Step 3: Cross multiply
    3,339.92x = 5,009.58 × 874.76
  4. Step 4: Simplify right side
    3,339.92x = 4,382,180.20
  5. Step 5: Solve for x
    x = 4,382,180.20/3,339.92
  6. Step 6: Final answer
    x = 1,312.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.